4575 Duarte Ave, Oakley, CA 94561 Property Records

Contra Costa County property record for 4575 Duarte Ave, Oakley, CA 94561

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 1,461 sqft · built 1989
Lot Size	0.102 acres (4,420 sqft)
Owner	Trust Name on File
Last Sale	$149,000 (Nov 1994)
Tax Bill	$6,399 (2025)
Deeds & Mortgages	Feb 2022 Transfer
Flood Zone	Zone X (minimal risk)
APN	`035-671-003-8`

Property Details

APN / Parcel Number

Primary APN	`035-671-003-8`
Alternative APN	`035-671-003`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,461 sqft Living Area
Gross Area	2,063 sqft
1st Floor Area	768 sqft
2nd Floor Area	693 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1989
Effective Year Built	Effective 1989
Architectural Style	Contemporary
Exterior Material	Wood Siding
Roof Material	Composition Shingle
Lot Area	4,420 sqft (0.102 acres)
Garage Type	Attached
Garage Area	602 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	4575 DUARTE AVE
City	OAKLEY
State	CA
Zip	94561-2052
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T6865 L3
Legal Subdivision	SUBDIVISION 6865
Legal Tract	6865
Legal Lot Number	3
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	EAST CONTRA COSTA
Census Block Group	4
Census Block	4000
Census Tract	302005

Owner

4575 Duarte Ave is owner-occupied and held in a trust since November 1994.

Source: Contra Costa County records, as of July 14, 2026

Owner of Record	Trust Name on File
Mailing Address	4575 DUARTE AVE, OAKLEY, CA 94561-2052
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Nov 28, 1994 · Amount on File
Deed Sale	Nov 28, 1994 · Amount on File
Prior Sale	Jul 18, 1994 · Amount on File
Deed Document Number	1994283797
Prior Transfer Date	Feb 17, 1994
Prior Transfer Doc	0000050532
Record Updated	Oct 29, 2026

February 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Feb 25, 2022
Property Address	4575 DUARTE AVE, OAKLEY, CA 94561-2052
Document Number	0000035430
Map Reference	MB 318 PG 10
Instrument Date	Feb 7, 2022
Instrument	2022-035430
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	4575 DUARTE AVE, OAKLEY, CA 94561-2052

Tax Assessment & Valuation

The 2025 property tax bill for 4575 Duarte Ave was $6,399 with a homeowner's exemption.

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Oakley City
Secondary School District	Liberty Union High School District (09 - 12)
Elementary School District	Oakley Union Elementary School District (KG - 08)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$255,249 (+2%) Land $68,513 Building $186,736
2025	$6,399.00 Homeowner's exemption	$250,245 Land $67,170 Building $183,075
2023	$6,296.00 (+0.43%) Homeowner's exemption	$240,529 Land $64,562 Building $175,967
2022	$6,269.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 4575 Duarte Ave in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective October 12, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 4575 Duarte Ave is low, with a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	DIABLO WATER DISTRICT serves 47,158 people · EPA ID CA0710007
Water Source	Purchased surface water from RANDALL-BOLD WATER TREATMENT PLANT
Last State Inspection	Jan 2024
Also Mapped Here	CONTRA COSTA WATER DISTRICT
Lead	2 ppb (2020–2022) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 645 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20